The discussion focuses on analyzing the forces acting on a modified Atwood machine, specifically addressing the forces on the masses involved. The key forces identified include the gravitational force (mg), the tension force (T), and the spring force (kx). The participants confirm that the mass above the spring experiences forces of T, -mg, and -kx, while the mass below the spring experiences forces of -mg and kx. This clarification is essential for accurately constructing the free body diagram of the system.
PREREQUISITESStudents studying physics, particularly those focusing on mechanics and dynamics, as well as educators teaching concepts related to forces and motion in systems like the Atwood machine.
Careful: The only force of gravity on that mass is mg. (But there's a spring force on it.) So there are three forces acting on that mass.Shukie said:- On the mass above the spring there are two more forces, -2mg and T.
Doc Al said:Careful: The only force of gravity on that mass is mg. (But there's a spring force on it.) So there are three forces acting on that mass.
Yes.Shukie said:Are the forces on the mass above the spring then T and -mg and - kx?